wohlers



2 Sheets-Sheet I.

(No Model.)

B. WOHLERSJ M ed Nov. 9, 1880.

NJErERs, Pm) UTHDGRAFHER WASHINGTON n (L (No Model.) 2 Sheets-Sheet 2.

E. WOHLERS.

' Injectors. No. 234,158. Patented Nov. 9, I880.

sectioned. I

F6944 As ecli on ef'.

PETERS, PHDTO-UTMQGRAPHER, WASHINGTON. D C,

UNITED STATES PATENT OFFICE.

EMIL WOHLERS, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF OF HIS RIGHT TONATHAN & DREYFUS, OF SAME PLACE.

INJECTOR.

SPECIFICATION forming part of Letters Patent No. 234,158, dated November9, 1880.

Application filed September 28, 1880. (N0 model.)

To all whom it mayponcern:

Be it known that I, EMIL WoHLERs, of the city, county, and State of NewYork, have invented certain new and useful Improvements in Injectors forFeeding Boilers, of which the following is a specification.

M yinvention has relation to a supplemental jet or ejector organized andoperating on the general plans set forth in Letters Patent to Gresham,No. 57,057, dated August 7, 1866; and it consists in the improvedconstruction and arrangement, hereinafter shown and described, ot thesaid device.

In the drawings, Figure 1 is a longitudinal central section of so muchof an injector as needed to illustrate my invention. Fig. 2 is a sectionon a b, Fig. 1.. Fig. 3 is a section on 0 d, Fig. 1. Fig. 4 is a sectionon cf, Fig. l.

The injector proper (shown in the drawings) is the well-known Friedmaninjector.

A is the steam-supply conduit or chamber; B, the steam-valve; O, thesteam-nozzle; D, the combining-tube; E, the discharge-tube; F, thewater-supply tube leading to the water-supply chamber F of the injector,with cock F to control water-supply; G, the overflow-chamber. Theseparts above named are organized and operate together in the usual H isthe auxiliary valve, which controls admission of steam fromsteam-chamber A to the ejector. The steam admitted by the valve passesthrough the pipe or conduit I to nozzle J, and thence is discharged intothe dischargetube K, whose outer end is in communication with the openair and whose inner end opens into the chamber G, which is incommunication with the overflow-chamber G. The operation of thesedevices is Well known, and requires no detailed explanation.

When the auxiliary valve H is open the steam which passes from thenozzle J into the discharge-tube K forms a vacuum in theoverflow-chamber G G, thus causing water to be drawn from thewater-supply F F through the combining-tube. As soon as the waterescapes from tube K the main valve B is opened and the injector beginsits work, and the auxiliary valve H is closed, thus arresting thefurther operation of the ejector.

The improvements which I have made consist, mainly, in the constructionand relative arrangement shown of the water-supply tube F and theauxiliary steam-pipe I, which conduct steam from the valve to thedischargenozzle of the ejector.

The water-supply pipe forks or is divided into two branches at the pointwhere it would otherwise intercept the pipe I, as shown at F F, and thepipe I passes direct from the valve H to the nozzle J between andwithout contact with the said branches F F, being separated therefrom bya space, as, open to the surrounding air. The steam-pipe l is thusexternal to the water-supply chamber, and has no contact with the watertherein, as it would have were it to pass through said chamber.

The pipe I is secured at one end in a bushing, y, in which is formed theseat for the valve H. This bushing may be formed in one piece with thepipe, if desired. Its other end, which communicates with thedischarge-nozzle J of the ejector, enters the box or chamber G, in whichthe nozzle is located, through a suitable opening, thejoint being madesteam-tight by means of stuffing-box and packing, as indicated in Fig.1.

What I claim, and desire to secure by Letters Patent, is-

The injector water supply tube or pipe, branched or forked at the pointwhere it intercepts the steam pipe or conduit which leads from theejector steam-valve to the ejector discharge nozzle, in combination withsaid steam-pipe external to the injector watersupply chamber, extendingbetween the branches or forks of said water-supply pipe and separatedtherefrom by an intervening space, substantially as hereinbefore setforth.

In testimony whereof I have hereunto set my hand this 25th day ofSeptember, 1880.

E. WOHLERS. Witnesses:

CORNELIUS D. GOULD, W. H. KAY.

